Gas burner for heating plants



T. R. aLANcHA-w GAS BURNER FUR HEATING PLANTS 2 Sheets-Sheet '1 FiledDec.

ZNVENTOR.

THOMAS R. BLANCHARD. /Mw; M m

ATTORNEYG mm 1 i924. M98342 T. R- BLANCHARD GAS BURNER FOR HEATINGPLANTS Filed Dec. 20. 1925 2 Sheets-Sheet 2 INVENTOR: I THOMAS R BLACHARD.

B Y WW M ATTORNE S Patented June 17, 1924.

UNITED STATES THOMAS R. BLANCHARD, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR,BY MESNE AS- SIGNMENTS, TO THE AIRG-AS BURNER COMPANY, OF MINNEAPOLIS,MINNESOTA,-

A CORPORATION OF MINNESOTA.

GAS BURNER FOB HEATING PLANTS.

Application filed December 20, 1923. Serial No. 681,753.

To all whomz't may concern:

Be it known that I, THOMAS R. BLAN- OHARD, a citizen of the UnitedStates, residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in GasBurners for Heating Plants, of which the following is a specification.

My invention relates to gas burners for heating plants. Among theobjects of the invention are to provide a device of this character whichis convenient to install in furnaces and stoves already in use, andwhich will be safe, efficient, foolproof, and economical. Other objectsare to provide a device which requires no complicated adjustments, whichcan be used for heating purposes without requiring attention forlongperiods of time, and'which will consume only a small amount of gas forefl'ective heating.

The full objects and advantages of my invention will appear inconnection with the detailed description, and the novel features of myinventive idea will be particularly pointed out in the claims.

In the accompanying drawings which illustrate one form in which myinvention may be embodied,Fig. 1 is an elevational view of the burnershowing it in place in a hot water furnace, the latter being partlybroken away. Fig. 2 is a view of the burner in vertical section. Fig. 3is a view on reduced scale taken in section on the line 33 of Fig. 2.Fig. 4 is a view in section on the line 44 of Fig. 2. Fig. 5 is a viewin section on the line 55 of Fig. 2. Fig. 6 is a top plan view of theburner partly broken away. Fig. 7 is a fragmentary view in section takenat a different position from that shown in Fig. 2.

The burner is shown applied to a furnace F of well known constructionhaving a grate G. The base 10 of the burner is placed in centralposition upon the grate and consists of a metal disk having standards 12extending upwardly from points adjacent the periphery. The upper ends ofthese standards are provided with cross arms 14 which support adome-shaped bafiie 16 which for convenience is made in two similar partsheld together by means of a pin 18 on one ofthe parts extending into anopening formed in a lug 20 attached to the other part. The grate outsideof the base lO is made. substantially airtight by a layer of heatresisting material 22, such as asbestos, and the base 10 is providedwith openings 24 as shown in Fig. 5 for the passage of air. Above thebase 10 is a casting which includes a web 26 provided with a peripheralcylindrical flange 28, the lower end of which extends below the web 26and rests upon the base. The upper portion of the casting is composed ofan upwardly convexed plate 30 joined t0-.the upper end ofthe cylindricalflange 28 whereby a chamber 31 is produced within the body of thecasting. As best shown in Fig. 2, the web 26 is provided with a centralscrew-threaded opening into which is threaded the upperv end of a pipe32 which conducts a mixture of gas and air to the burner. The web 26 andthe plate. 30 are joined by a, plurality'of tube-like'members 34;arranged circularly around the cen-' ter of the casting whereby verticalopenings are produced which extend through the cast-.

ing. The plate 30 is provided with a multiplicity of perforations 36,the material of the plat being preferably thickened around the upperends of these perforations as shown in Fig. 2. The plate 30 constitutesa distributor for the gas.

The operation and advantages of my invention will now be obvious. Amixture of gas and air passes through the pipe 32 into the chamber 31from which it is distributed to the perforations 36 after passingthrough which it is ignited underneath the dome or baffle 16. The entiredraft of air for th furnace is through the openings 24 and tubularmembers 34:, the latter being so disposed that a large volume of air isintroduced into the center of the flame supplied by the gas comingthrough the perforations 36. In this manner, a very hot flame isproduced from a small amount of gas. The dome 16 serves as a baflle andcauses the flame to spread out into engagement with the interior wall ofthe furnace as willbe apparent from Fig. 1. In operation, the burner ispractically noiseless and its use is not accompanied by the productionof soot, odor, ashes or dust while an adequate supply of fuel is readilyavailable from the city gas system.

' I Pr ve g .pa' fase P l: Wall [of which.

1. A "gas burner for heating plants comprising a base member placed onthe grate ofthe 'h'eating plant, a layer ofmaterial on the gratesurrounding said base member for preventing passage of air outside ofsaid base member, a gas conducting pipe extending through said basemember; the: latter having openings outside of said pipe for passage ofair, tio ned above said base member and the outletend' of saidconducting pipe. i f2; A gas burner for heating plants comprising a basemember placed on the grate of the'heatin'g plant, a layer of material onthe gratesurrou'nding said base member for f pair outside of said basemember, gas 'cendueting pipe eXten ding through, saidf base member; thelatter having'openingsf outside, of said' pipe for i aholloW member tothe lower the end of [said conducting pipe is atta'ehed, theiu'p-perwall of said hol- Low 'vmember having a multiplicity of perforat'ions'for 'passageof gas, and a plurality o;t '-.tuhelike memberseonne'etingthe upper andX-lC er Walls (if said hollow member'forsupplying a i'r to' the central portion of the space above 's'aid upperwall.

3, A gas burner :for heating plants comprising ,a basemember plaeed on'the grate of the heating plant, a layer of material on the gratesurrounding said base member for and a gas distributor posrpreventingpassage of air outside of said base-member, agas conducting pipeextending through said base member, the latter having openings outsideof said pipe for passage of air, a gas distributor positioned above saidbase member and the outlet end of said conducting pipe, and a bafiiepositioned above said gas distributor for deflecting the flameoutwardly.

l. A gas bLlIIlGD for heating plants comprising a base member placed onthe grate of the heating plant; a layer of material on the gratesurrounding said base member for preventing passage of air outside ofsaid base member, a gas conducting:pipe'eXtending through said'basemember, the latter ha vingopenings-outside ofsaid pipe for passage ofair, a hollow-member to thelower wall of which the en'd of saidconducting pipe is attached, the upper Wall of said hollow memberhavinga multiplicity of per-. forations for passage of gas, a plurality oftubelike' members connecting the upper and lower walls ofs a-id hollow.member for sup- 'alying gas'to the central p'ortionof the space abovesaid upper Wall, standards extending upwardly fromsaid base member, anda batfle supported by said standards in spaced relation above said upperwall. In testimony whereof" I hereunto affix my signature.

, THOMAS R. BLANOHARD.

